Tag: M.W=100-200

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called A Pseudomonas putida capable of stereoselective hydrolysis of nitriles, published in 1997-02-28, which mentions a compound: 4553-62-2, mainly applied to stereoselective nitrile hydratase amide Pseudomonas; nitrilase stereoselective Pseudomonas, Safety of 2-Methylglutaronitrile.

P. putida NRRL-18668 contains a nitrile hydratase capable of stereoselective hydrolysis of 2-(4-chlorophenyl)-3-methylbutyronitrile at >90% enantiomeric excess (ee) to the (S)-amide. This soil isolate was recovered from enrichments using (R,S)-2-methylglutaronitrile as the sole nitrogen source. Enzyme expression is constitutive and does not show a high level of catabolite repression. The organism is capable of growth on a wide variety of aliphatic mono- and dinitrile compounds The hydrolysis activity on propionitrile is ∼10.3 μmol/h-mg wet cells. The enzyme in cell-free preparations is inhibited by a number of heavy metals, phenylhydrazine, and cyanide. Substrate specificity is broad, with highest rates shown on C4 and C5 aliphatic mononitriles. The strain appears somewhat unusual in its dependence on Co supplementation for maximum enzyme activity and the ability to hydrolyze some aromatic nitriles. This strain is also capable of a 2-step hydrolysis of 2-(4-isobutylphenyl)-propionitrile and 2-(6-methoxy-2-naphthyl)-propionitrile to the (S, with stereoselectivity residing primarily in the aliphatic amidase. This appears to be the 1st description of a stereoselective nitrile hydratase from a gram-neg. organism.

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Darwich, Walid; Garron, Anthony; Bockowski, Piotr; Santini, Catherine; Gaillard, Frederic; Haumesser, Paul-Henri published an article about the compound: Mesitylcopper(I)( cas:75732-01-3,SMILESS:[Cu]C1=C(C)C=C(C)C=C1C ).Reference of Mesitylcopper(I). Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:75732-01-3) through the article.

An easy, efficient, and safe process is developed to metalize mesoporous Si (PSi) with Cu from the decomposition of a solution of mesitylcopper (CuMes) in an imidazolium-based ionic liquid (IL), [C1C4Im][NTf2]. The impregnation of a solution of CuMes in IL affords the deposition of metallic islands not only on the surface but also deep within the pores of a mesoporous Si layer with small pores <10 nm. Therefore, this process is well suited to efficiently and completely metalize PSi layers. An in-depth mechanistic study shows that metal deposition is due to the reduction of CuMes by surface silane groups rather than by Si oxidation as observed in aqueous or H2O-containing media. This could open a new route to the chem. metalization of PSi by less-noble metals difficult to attain by a conventional displacement reaction. If you want to learn more about this compound(Mesitylcopper(I))Reference of Mesitylcopper(I), you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(75732-01-3).

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4 ) is researched.SDS of cas: 60827-45-4.Jones, Haydn F. published the article 《Stereospecific synthesis of R- and S-3-chloropropan-1,2-diol》 about this compound( cas:60827-45-4 ) in Chemistry & Industry (London, United Kingdom). Keywords: chloropropandiol stereospecific preparation; propanediol chloro stereospecific preparation; glycoside synthon chloropropanediol. Let’s learn more about this compound (cas:60827-45-4).

S-ClCH2CH(OH)CH2OH (S-I) was prepared from Me 6-chloro-6-deoxy-α-D-glucopyranoside by sequential oxidative ring cleavage, reduction and hydrolysis. R-I was similarly prepared from Me 5-chloro-5-deoxy-α-L-arabinofuranoside, which was obtained from Me 2,3-di-O-benzoyl-5-O-(p-tolylsulfonyl)-α-L-arabinofuranoside by chlorination and then deesterification.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Leoni, Piero; Pasquali, Marco; Ghilardi, Carlo A. researched the compound: Mesitylcopper(I)( cas:75732-01-3 ).Formula: C9H11Cu.They published the article 《Isolation and crystal and molecular structure of a rare example of a mononuclear organocuprate.》 about this compound( cas:75732-01-3 ) in Journal of the Chemical Society, Chemical Communications. Keywords: crystal structure phenylphosphinoethanecopper dimesitylcuprate complex; copper phenylphosphinoethane mesityl complex; mesitylcuprate complex crystal structure. We’ll tell you more about this compound (cas:75732-01-3).

Reaction of 2,4,6-Me3C6H2Cu with (Ph2PCH2)2 in PhMe gave [(Ph2PCH2)2]2(2,4,6,-Me3C6H2)2Cu2 (I) and its structure was determined by x-ray crystallog. anal. I consists of a linear mononuclear [(2,4,6,-Me3C6H2)2Cu]- unit with tetrahedral [Cu[(Ph2PCH2)2]2]+ as counter ion.

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Recommanded Product: 75732-01-3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Synthesis of bimetallic nanoparticles in ionic liquids: Chemical routes vs physical vapor deposition. Author is Helgadottir, I. S.; Arquilliere, P. P.; Brea, P.; Santini, C. C.; Haumesser, P.-H.; Richter, K.; Mudring, A.-V.; Aouine, M..

Ionic liquids (ILs) can be used to generate and stabilize metallic nanoparticles (MNPs) by several phys. and chem. routes. Here, the simultaneous decomposition of Ru and Cu organometallic precursors in IL is shown to yield core-shell Ru@CuNPs with smaller diameters and narrower size distributions than the corresponding monometallic NPs, in a broad range of Ru:Cu compositions They are probably formed by rapid nucleation of Ru cores followed by decomposition of the Cu precursor on their surface. This effect forces the formation of a bimetallic structure that does not form with the use of purely phys. processes such as PVD. These Cu, Ru, and Ru@CuNPs could be used for the formation of seed and barrier layers for the metalization of advanced interconnect structures.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Soluble Zintl Phases A14ZnGe16 (A = K, Rb) Featuring [(η3-Ge4)Zn(η2-Ge4)]6- and [Ge4]4- Clusters and the Isolation of [(MesCu)2(η3,η3-Ge4)]4-: The Missing Link in the Solution Chemistry of Tetrahedral Group 14 Element Zintl Clusters, the main research direction is zinc germanium potassium rubidium Zintl preparation electronic structure; crystal structure zinc potassium rubidium germanide Zintl cluster.Application of 75732-01-3.

The number of Zintl phases containing polyhedral clusters of tetrel elements that are accessible for chem. reactions of the main-group element clusters is rather limited. The synthesis and structural characterization of two novel ternary intermetallic phases A14ZnGe16 (A = K, Rb) are presented, and their chem. reactivity was studied. The compounds can be rationalized as Zintl phases with 14 alkali metal cations A+ (A = K, Rb), two tetrahedral [Ge4]4- Zintl anions, and one anionic heterometallic [(Ge4)Zn(Ge4)]6- cluster per formula unit. The Zn-Ge cluster comprises two (Ge4) tetrahedra linked by a Zn atom, with one (Ge4) tetrahedron coordinating with a triangular face (η3) and the other one with an edge (η2). [(η3-Ge4)Zn(η2-Ge4)]6- is a new isomer of the [(Ge4)Zn(Ge4)]6- anion in Cs6ZnGe8. The phases dissolve in liquid NH3 and thus represent rare examples of soluble Zintl compounds with deltahedral units of Group 14 element atoms. Compounds with tetrahedral [E4]4- species were previously isolated from solution for E = Si, Sn, and Pb, and the current study provides the missing link for E = Ge. Reaction of an NH3 solution of K14ZnGe16 with MesCu (Mes = 2,4,6-Me3C6H2) in the presence of [18]-crown-6 (1,4,7,10,13,16-hexaoxacyclooctadecane) yielded crystals of [K([18]-crown-6)]2K2[(MesCu)2Ge4](NH3)7.5 with the polyanion [(MesCu)2Ge4]4-. This MesCu-stabilized tetrahedral [Ge4]4- cluster also completes [(MesCu)2Si4-xGex]4- clusters, which were previously isolated from solution for x = 0 and 0.7, as the end member with x = 4. The electronic structures of [(Ge4)Zn(Ge4)]6- and [(MesCu)2Ge4]4- were studied in terms of a MO description and analyses of the electron localization functions. The results are compared with band structure calculations for the A14ZnGe16 phases (A = K, Rb).

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about Solid state properties and effective resolution procedure for guaifenesin, 3-(2-methoxyphenoxy)-1,2-propanediol, the main research direction is guaifenesin enantiomer resolution.HPLC of Formula: 60827-45-4.

Racemic expectorant guaifenesin, 3-(2-methoxyphenoxy)-1,2-propanediol (2) undergoes spontaneous resolution upon crystallization This fact is confirmed by thermal anal. (single eutectic V-shape binary melting phase diagram, adequate entropy and free energy characteristics). Racemic 2 could be effectively resolved into (S)- and (R)-2 by a preferential crystallization procedure. Single enantiomer drugs levomoprolol and levotensin were obtained by starting from enantiomeric 2 through the sulfite route.

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Davies, Robert P.; Hornauer, Stefan; White, Andrew J. P. published an article about the compound: Mesitylcopper(I)( cas:75732-01-3,SMILESS:[Cu]C1=C(C)C=C(C)C=C1C ).Category: iodides-buliding-blocks. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:75732-01-3) through the article.

The synthesis and characterization (including x-ray crystallog.) of two novel tetranuclear and thermally-stable Li arylcuprates, [Cu2Li2Mes4] and [Cu3LiMes4], are reported. [Cu3LiMes4] is a highly active regioselective promoter for the 1,4-addition of organolithiums to enones (e.g. ≤96% conversion of cyclohex-2-enone to 3-butylcyclohexanone). DFT studies of 3 isomeric forms of [Cu2Li2Mes4] are reported.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (2S)-(+)-3-Chloropropane-1,2-diol(SMILESS: OC[C@H](O)CCl,cas:60827-45-4) is researched.Related Products of 591-54-8. The article 《Inhibition of fructolytic enzymes in boar spermatozoa by (S)-α-chlorohydrin and 1-chloro-3-hydroxypropanone》 in relation to this compound, is published in Australian Journal of Biological Sciences. Let’s take a look at the latest research on this compound (cas:60827-45-4).

When boar spermatozoa were incubated with (S)-α-chlorohydrin  [60827-45-4], glyceraldehyde-3-phosphate dehydrogenase (GPD) [9001-50-7] activity was inhibited. The (R)-isomer had no effect whereas (R,S)-3-chlorolactaldehyde  [84709-24-0] also inhibited GDP and lactate dehydrogenase  [9001-60-9]. The in vitro production of (S)-3-chlorolactaldehyde  [86747-03-7], the active metabolite of (S)-α-chlorohydrin, was attempted by incubating boar spermatozoa with 1-chloro-3-hydroxypropanone  [24423-98-1]. Preliminary results indicated that this compound is converted into (S)-3-chlorolactaldehyde as well as to another metabolite which is an inhibitor of other enzymes within the fructolytic pathway.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4 ) is researched.Name: (2S)-(+)-3-Chloropropane-1,2-diol.Ford, W. C. L.; Harrison, Anne; Waites, G. M. H. published the article 《Effects of the optical isomers of α-chlorohydrin on glycolysis by ram testicular spermatozoa and the fertility of male rats》 about this compound( cas:60827-45-4 ) in Journal of Reproduction and Fertility. Keywords: chlorohydrin sperm glycolysis fertility. Let’s learn more about this compound (cas:60827-45-4).

When 0.1 mM S-α-chlorohydrin [60827-45-4] was present in incubations, glycolysis by ram testicular spermatozoa was almost completely inhibited whereas 10 mM R-α-chlorohydrin [57090-45-6] had no effect. Male rats dosed orally with S-α-chlorohydrin (3.25 mg/kg/day) became much less fertile than controls but those dosed with R-α-chlorohydrin (13 mg/kg/day) did not. The loss of fertility was associated with a reduced ability of spermatozoa from the cauda epididymidis of these rats to oxidize glucose [50-99-7]. Apparently, the S enantiomer is responsible for both the inhibition of sperm glycolysis and the reduction in fertility caused by the racemic mixture of α-chlorohydrin.

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